The LOLCAT is mildly amusing, but what I find really amazing is that someone actually took the time to write an implementation LOLCODE for the DLR.
Imagine that, instead of writing boring old C# code, you wrote something like this:
HAI CAN HAS STDIO? I HAS A FISH ITZ "Yummy" VISIBLE FISH VISIBLE "HAI WORLD!" I HAS A FIB I HAS A A ITZ 1 I HAS A B ITZ 0 GIMMEH FIB IM IN YR LOOP VISIBLE B IZ FIB SMALR 1? YARLY GTFO NOWAI VISIBLE "NOWAI" KTHX I HAS A TEMP ITZ A UP B LOL A R B LOL B R TEMP NERFZ FIB!! KTHX KTHXBYE
Incredible. As John said, though, if nothing else it's a great example of how to implement a simple language on the DLR.